Simultaneous eruption of an impacted premolar due to traction applied on adjacent impacted tooth – what and where is the connection?

The mechanism of tooth eruption and the origin of eruptive forces are still controversial topics. Biological control underlying the eruption phenomenon is yet to be fully elucidated. This article reports a clinical observation that could have been overlooked in the literature. Eruption of an impacted fïrst premolar was noted inadvertently subsequent to an applied traction to the adjacent impacted second premolar in a 47-yearold maie subject. A quest to the ongoing controversy of eruption is raised and hypotheses formulated.